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responses on faster Rockets

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andrew(at)nzactive.com
Guest

Posted: Sun Sep 14, 2008 11:49 am Post subject: responses on faster Rockets

Many thanks to everyone (particularly Lee, for his exceptionally

comprehensive post) for thoughts and ideas. A few things to consider.

Dave Anders certainly did an extraordinary job on his RV4, and I'll see

what I can pillage  Interesting, the concept of Lycon maybe being a

tad optimistic on the dyno front - I guess I thought a C4B5 that had

higher compression pistons that would run at 2700 would automatically

put out 280 hp-ish, since a standard (Aztec) C4B5 w normal pistons does

250 hp at 2575. I'll think about all this stuff, and will probably reply

individually.



w gratitude



Andrew 



PS anyone happen to know reasonable performance figures for a CLEANED

UP, light HR2? Sounds like my 198-199 TAS up high could actually be

plenty good? It seems "the wing is the thing"...but it's both too late

to change the wing, and I really need that low-ish stall speed for NZ

flying. The extra knot is just the ego talking....I'd really like to see

210 - 215, (KTAS) but am not sure if that's reasonable or possible?



--

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f1rocket(at)telus.net
Guest

Posted: Sun Sep 14, 2008 3:39 pm Post subject: responses on faster Rockets

Hi Andrew,



I'm not light (1280), stock F1.  IO540 with 9.5 to 1 and one e-ignition.



I always see 225 mph true at anything over 7500 ft.  Yesterday I saw 225 mph

true (188 knots ground one way, 210 knots ground coming home) over the rocks

at 10500 burning 13.2 GPH.  I run conservative at 2300/21 inches.  3 blade

MT.



When I first flew the plane, I had no gear leg fairings, to pants and could

not keep up to Ken Fowler for the life of me.



I'm not fast, but fast enough for me.  Although, after reading Tom's post, I

now wonder if a 2 blade blended should be in my future.



Jeff



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smokyray(at)yahoo.com
Guest

Posted: Tue Sep 16, 2008 4:27 am Post subject: responses on faster Rockets

Andrew, 

  I think you have decent numbers right in the heart of "Standard Rocket Performance". For a Hershey Bar wing airplane capable of operating out of STOL airports that cruises at 3 nautical miles a minute plus, that's impressive.

   If you want faster, you're going to have to retract your wheels (Lancair, Glasair), go to a composite airframe (yuk) and more moving parts. Or, turbo charge and go really high...



For me, the Rocket is THE BEST of both worlds. 



Smokey

HR2



--- On Sun, 9/14/08, ACTIVE NZ - Andrew <andrew(at)nzactive.com> wrote:

[quote]From: ACTIVE NZ - Andrew <andrew(at)nzactive.com>

Subject: Re: responses on faster Rockets

To: rocket-list(at)matronics.com

Date: Sunday,  September 14, 2008, 2:49 PM



[quote]--> Rocket-List message posted by: "ACTIVE NZ - Andrew"

<andrew(at)nzactive.com>



Many thanks to everyone (particularly Lee, for his exceptionally

comprehensive post) for thoughts and ideas. A few things to consider.

Dave Anders certainly did an extraordinary job on his RV4, and I'll see

what I can pillage  Interesting, the concept of Lycon maybe being a

tad optimistic on the dyno front - I guess I thought a C4B5 that had

higher compression pistons that would run at 2700 would automatically

put out 280 hp-ish, since a standard (Aztec) C4B5 w normal pistons does

250 hp at 2575. I'll think about all this stuff, and will probably reply

individually.



w gratitude



Andrew 



PS anyone happen to know reasonable performance figures for a CLEANED

UP, light HR2? Sounds like my 198-199 TAS up high could actually be

plenty good? It seems "the wing is the  thing"...but it's both too

late

to change the wing, and I really need that low-ish stall speed for NZ

flying. The extra knot is just the ego talking....I'd really like to see

210 - 215, (KTAS) but am not sure if that's reasonable or possible?



--

- The Matronics Rocket-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Rocket-List

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